> Perhaps serious finance professionals learnt double entry accounting, checks and balances etc. and know how to avoid those errors? Sure, but they also use ac

> Perhaps serious finance professionals learnt double entry accounting, checks and balances etc. and know how to avoid those errors? Sure, but they also use accounting software, not Excel. > Software developers on the other hand never make mistakes Sure they do, but they use testing and typed languages etc. The problem with Excel is comma vs dot, locales, fat fingering, out of range errors, too easy to change a cell formula by mistake etc.